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Memphis told L’Equipe recently he believes he could have shown Mourinho what he is capable of but did not get a chance after his faltering start to life at United.

"In the first season, I didn’t contribute enough," he said.

"But I really believe you need a year to succeed in the Premier League, it’s the fastest league in the world. The second, I had my self-belief back, but I didn’t play.

"It’s then that you look at yourself in the mirror and you ask yourself a lot of questions: ‘Am I not good enough?’ It was really tough. To stay positive, you have to be very strong mentally. That experience made me grow up and is useful to me today."